The Monster Motor Controller Shield For Arduino (14A, 5.5-16V) is essentially a ramped up version of Sparkfun''''''''s Ardumoto motor driver shield. For this monster shield maufacturer has replaced the L298 H-bridge with a pair of VNH2SP30 full-bridge motor drivers. Manufacturer has also beefed up the support circuitry so this board is capable of driving a pair of high-current motors.